Abstract:

I adjusted PRCL and MICH ASC loop gain.

Detail:

Same as ARM ASC (klog35180), I adjusted the MICH and PRC ASC gains.
I implemented 12dB gain at FM4 of MICH_P filter bank (fig1).
I also implemented 6dB gain and notch filters (3.1Hz and 3.9Hz with Q=3 and depth=20dB) at FM2 and FM3 of MICH_Y filter bank, respectively (fig2 and fig3).

In addition, I increased gain of PRC2_P and PRC1_Y by 6dB and 12dB, respectively (I added 6dB at FM2 for PRC2_P (fig4) and just turned off FM3 for PRC1_Y).
I also added notch filters for PRC2_P and PRC1_Y at FM3 and FM5, respectively (fig5 and fig6).

After that, I measured spectra of MICH and PRC error signals (fig7).
Blue and red shows the spectra before and after tuning, respectively.
They seems slightly better than before.